package jdbc;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

public class JDBCDemo7 {
    public static void main(String[] args) {
        UserInfo userInfo = InputUtil.getInputObject(new UserInfo(),"注册用户", "登录");
        try(Connection connection = DBUtil.getConnection()) {
            String sql = "SELECT id,username,password,nickname,age" +
                         " FROM userinfo " +
                         "WHERE username = ? AND password = ? ";
            PreparedStatement ps = connection.prepareStatement(sql);
            ps.setString(1,userInfo.getUsername());
            ps.setString(2,userInfo.getPassword());
            ResultSet resultSet = ps.executeQuery();
            System.out.println(resultSet.next()?"登录成功":"用户名或密码错误");
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }
    }
}
